Changing Brake Fluid

Hey Gents:
Gimme the skinny on changing it. Do I open all four bleeders on each brake
in sequence and then the main one last? I have the Bentley, but the
procedure is somewhat unclear.
Is there some sort of Super brake fluid I should use (as long as it is Dot
4)? You guys have done it, so a full detail would be nice if you know.
Thanks,
Todd
The Judge
90 80Q (Terror of Los Angeles)
86 VW Scirocco 16V Wolfsburg
85 5KCS (not missed at all)